Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
78 − 10 = ______
65 + 10 = ______
51 + 20 = ______
14 + 20 = ______
19 + 20 = ______
1 × 10 = ______
21 + 10 = ______
42 + 20 = ______
52 − 10 = ______
3 × 10 = ______
26 − 10 = ______
25 + 10 = ______
34 + 20 = ______
82 + 10 = ______
8 × 10 = ______
29 + 20 = ______
64 − 10 = ______
67 + 10 = ______
85 − 10 = ______
7 × 10 = ______
